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Realtek Rtl8188cu Wireless Lan 80211n Usb 20 Network Adapter Verified Jun 2026

Use cases (good/bad)

The Realtek RTL8188CU Wireless LAN 802.11n USB 2.0 Network Adapter Go to product viewer dialog for this item. Use cases (good/bad) The Realtek RTL8188CU Wireless LAN

The 8188eu or 8192cu drivers often crash. Use the rtl8xxxu driver (built into newer kernels) by blacklisting the others: It is perfectly fine for browsing the web,

This is a N150 adapter. It is perfectly fine for browsing the web, checking email, and streaming standard definition video. However, it is not suitable for heavy 4K streaming, competitive gaming, or large file transfers, as the 150 Mbps speed is the theoretical maximum under perfect conditions. and streaming standard definition video. However

| Metric | Theoretical Max | Verified Real-World | | :--- | :--- | :--- | | Throughput (close range) | 150 Mbps | 85–110 Mbps | | Throughput (30 ft, wall) | 150 Mbps | 45–65 Mbps | | Latency (ping to router) | <1 ms | 2–4 ms | | Connection stability | N/A | Dropped packets <0.5% | | Range (external antenna) | 300 ft LOS | 220 ft (stable 10 Mbps) |

It supports everything from legacy Windows XP and Vista to modern Windows 10 and 11

Let’s break down what this chip is, where it shines, and—most importantly—how to get the drivers working on modern OSes.